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United States Patent | 6,055,977 |
Linard | May 2, 2000 |
Disclosed is a window construction for a heater, which generally has a frame and at least one panel fitted on the frame. The frame and the at least one panel are usually made of different materials having different expansion coefficients. An expansion compensator made of bimetallic material is provided to the window located between the frame and a distal portion of the at least one panel to otherwise contact the frame. The expansion compensator compensates the differential expansions occurring between the frame and the at least one panel as the heater temperature changes.
Inventors: | Linard; Gerard (Monceau Imbrechies, BE) |
Assignee: | Thermic Investment (Luxembourg, LU) |
Appl. No.: | 183400 |
Filed: | October 30, 1998 |
Oct 31, 1997[EP] | 97203396 |
Current U.S. Class: | 126/200; 52/202; 52/204.591; 52/204.599; 52/204.6; 52/573.1; 126/544; 126/545; 432/247; 432/250; 432/251 |
Intern'l Class: | F23M 007/00; F24B 001/192; F27D 001/00 |
Field of Search: | 126/190,198,200,544,545,547,543 52/573.1,204.59,204.591,204.599,204.6,204.69,127.12,202,204.51 313/404,405,406,407 428/34 219/391 432/251,247,250 |
1013390 | Jan., 1912 | Huenefeld | 126/200. |
1016566 | Feb., 1912 | Huenefeld | 126/200. |
1017196 | Feb., 1912 | Balioan | 126/200. |
1813162 | Jul., 1931 | Hoegger | 52/202. |
1887654 | Nov., 1932 | Mahon | 126/200. |
2047086 | Jul., 1936 | Stephens | 52/202. |
2122453 | Jul., 1938 | Clause | 126/200. |
2456486 | Dec., 1948 | Berghoff | 52/202. |
2580957 | Jan., 1952 | Reeves | 126/200. |
2747568 | May., 1956 | Dupler | 126/200. |
3789825 | Feb., 1974 | Reiner | 52/202. |
3935497 | Jan., 1976 | Cowles et al. | 313/405. |
4121379 | Oct., 1978 | Everson | 52/202. |
4143493 | Mar., 1979 | Booi | 52/127. |
4300528 | Nov., 1981 | Slemmons | 126/200. |
4572983 | Feb., 1986 | Ragland, Jr. | 313/405. |
5394052 | Feb., 1995 | Oh | 313/405. |
5477646 | Dec., 1995 | Dietz et al. | 52/202. |
Foreign Patent Documents | |||
0446792 A2 | Sep., 1991 | EP. |